Shrinking, Detroit Faces Fiscal Nightmare By JODI WILGOREN ETROIT, Jan. 29 - In the decade after he finished law school, Dan Varner watched with mounting exasperation as his black, middle-class peers defected from Detroit, beloved city of his birth. He was the relentless city booster telling college-bound teenagers to come home after graduation, the one urging far-flung friends to move here, the man always talking about rebuilding the city while others abandoned it. Then, one day, Mr. Varner said he realized "there was really no one to have dinner with." He said he "could count on one hand in the...